how can i upload this new generated image to my localhost/images/

Question

I am trying to publish an image that generated by my steganography web. So here is the current flow.

User choose an image for the steganography
User input their message
Web will generate new image that already have that message inside <img> tag

How can I upload this new generated image to my localhost/images/ ?

Expected behavior:

After the image is generated user will press publish button, it will create a post request and also upload the generated image to desired location.

<img src="" id="final_image" class="img-thumbnail">

I have the generated image here. and currently have to move manually by, right click > save as > desired destination.

i will use php instead, so after the user click the generate button i will also create a post request and upload the generated image — M Umar Ramadhana, Jun 12 '18 at 10:38
you can check this my answer https://stackoverflow.com/questions/38392740/upload-image-to-folder-and-insert-path-to-database-and-text-files-in-php/38392903#38392903 — Lokesh Pandey, Jun 12 '18 at 10:40
sorry, but its a normal upload, the thing is i want to upload the image that generated by the web @Lokesh — M Umar Ramadhana, Jun 12 '18 at 10:45
that's what I have done there. I have just added another step of storing the image file location in database. which you can omit that — Lokesh Pandey, Jun 12 '18 at 10:47
so what you've done there is upload the actual file, not the generated one. for example. I upload file called a.png and then my web modify that file to a1.png, what i want to upload is a1.png — M Umar Ramadhana, Jun 12 '18 at 10:50
I guess you are changing the file name and then trying to upload right ? — Lokesh Pandey, Jun 12 '18 at 10:51
not the file name, its the pixel value of the file because i'm doing steganography. so basically i want to modify the content of the file then upload it — M Umar Ramadhana, Jun 12 '18 at 10:52
then you might like this http://thedebuggers.com/image-steganography-hiding-text-using-php/ — Lokesh Pandey, Jun 12 '18 at 10:54
and also this thread https://stackoverflow.com/questions/10290259/detect-main-colors-in-an-image-with-php — Lokesh Pandey, Jun 12 '18 at 10:55
in that case your question should not be like `how can i upload this new generated image to my localhost/images/` you should ask how could you generate the steganography image. — Lokesh Pandey, Jun 12 '18 at 10:56

score 0 · Accepted Answer · edited Jun 27 '18 at 06:39

0

First get the image and convert to base64 using js or jQuery and save base64 image as file using php like this

$data = 'data:image/png;base64,AAAFBfj42Pj4';

list($type, $data) = explode(';', $data);
list(, $data)      = explode(',', $data);
$data = base64_decode($data);

file_put_contents('/tmp/image.png', $data);

edited Jun 27 '18 at 06:39

piet.t

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answered Jun 12 '18 at 10:52

Shazvan Hanif

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is in this solution i have to upload the original file and then rewrite it with the one that i generated? , base on this http://php.net/manual/en/function.file-put-contents.php – M Umar Ramadhana Jun 12 '18 at 11:14
you can check this(https://stackoverflow.com/questions/19146954/replace-file-in-php) – Shazvan Hanif Jun 12 '18 at 11:19
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it works thanks!!!, so i upload the original image first, and then rewrite it with the base64 string, i don't get it at first. but thanks – M Umar Ramadhana Jun 12 '18 at 12:12

how can i upload this new generated image to my localhost/images/

1 Answers1